Edit: PBS Space Time and Dr Becky have done some great videos about this on YouTube.
It’s basically a disagreement on the expansion rate of the universe. Depending on how we measure it we get two vastly different numbers. And either our understanding of how the universe evolved after the Big Bang is wrong or we interpreted data from our telescopes incorrectly.
The hope with the launch of JWST was that it would go away with better data. But it seems to be getting worse.
So that makes it more and more likely that our universe formation theories are wrong. This does not mean that there wasn’t a Big Bang. But it means that what we thought happened between the Big Bang and now isn’t quite right.
So we can expect some great new theories in the next decades.
Can you define crisis in cosmology please? Trying to learn.
Edit: PBS Space Time and Dr Becky have done some great videos about this on YouTube.
It’s basically a disagreement on the expansion rate of the universe. Depending on how we measure it we get two vastly different numbers. And either our understanding of how the universe evolved after the Big Bang is wrong or we interpreted data from our telescopes incorrectly.
The hope with the launch of JWST was that it would go away with better data. But it seems to be getting worse.
So that makes it more and more likely that our universe formation theories are wrong. This does not mean that there wasn’t a Big Bang. But it means that what we thought happened between the Big Bang and now isn’t quite right.
So we can expect some great new theories in the next decades.
Thank you!